[Reportbug-maint] Bug#894916: reportbug: print "Please install python3-urwid" instead of "Ignored bogus setting for --ui: urwid"

[Paul Wise]

Package: reportbug
Version: 7.1.10
Severity: minor

When I tried the urwid UI for reportbug I got an error message:

$ reportbug --ui urwid
Ignored bogus setting for --ui: urwid

After installing python3-urwid I got the urwid UI.

I think it would be nicer to get this error message instead:

$ reportbug --ui urwid
Please install python3-urwid to use the urwid UI.

-- System Information:
Debian Release: buster/sid
  APT prefers testing-debug
  APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages reportbug depends on:
ii  apt                1.6~beta1
ii  python3            3.6.4-1
ii  python3-reportbug  7.1.10
ii  sensible-utils     0.0.12

reportbug recommends no packages.

Versions of packages reportbug suggests:
pn  claws-mail                                 <none>
ii  debconf-utils                              1.5.66
ii  debsums                                    2.2.2
pn  dlocate                                    <none>
pn  emacs24-bin-common | emacs25-bin-common    <none>
ii  exim4                                      4.90.1-5
ii  exim4-daemon-light [mail-transport-agent]  4.90.1-5
ii  file                                       1:5.32-2
ii  gir1.2-gtk-3.0                             3.22.29-2
ii  gir1.2-vte-2.91                            0.52.0-1
ii  gnupg                                      2.2.5-1
ii  python3-gi                                 3.28.1-1
ii  python3-gi-cairo                           3.28.1-1
pn  python3-gtkspellcheck                      <none>
pn  python3-urwid                              <none>
ii  xdg-utils                                  1.1.2-2

Versions of packages python3-reportbug depends on:
ii  apt                1.6~beta1
ii  file               1:5.32-2
ii  python3            3.6.4-1
ii  python3-apt        1.6.0~rc2
ii  python3-debian     0.1.32
ii  python3-debianbts  2.7.2
ii  python3-requests   2.18.4-2

python3-reportbug suggests no packages.

-- no debconf information

-- 
bye,
pabs

https://wiki.debian.org/PaulWise
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